Node.js / Express.js - AJAX PUT request

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In this article, we would like to show you how to make AJAX PUT requests in Express.js

1. Express.js PUT methods example

In this section, we use Express.js to handle PUT requests.

Note: it is required to add external library to run below example, so use:

npm install express


const express = require('express');

const port = 3000;
const app = express();

app.put('/examples', (request, response) => {
  const data = request.body;
  // inserting new resources

  response.send('put your changed data here');

app.listen(port, () => {
    console.log(`server is listening at http://localhost:${port}`);

To run the server use: 

node index.js


server is listening at http://localhost:3000

2. Pure JavaScript (Vanilla JS) AJAX PUT request

The following is an example execution of a fetch method that sends PUT requests.

<!DOCTYPE html>

      var bodyData = 'text';

      fetch('/examples', {
        method: 'PUT',
        headers: {
          'Content-Type': 'text/plain',
        body: bodyData,
        .then((response) => response.json())
        .then((data) => {
          console.log('Success:', data);
        .catch((error) => {
          console.error('Error:', error);
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Node.js / Express.js - AJAX requests

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